So I'll list a few I've heard today (No I have no clue what in the world the lyrics are saying)

Innocent Sorrow from D. Gray-Man
Hikari form Nabari no Ou
Black Diamond from Shugo Chara
Kimi=Hana from Junjou Romantica
Sakasama no Chou from Jigoku Shoujo
Colors of the Heart from Blood+
Tsuki no Curse from Loveless
D-Technolife from Bleach